The information presented in this document was created from devices in
a specific lab environment. All of the devices used in this document started
with a cleared (default) configuration. If you are working in a live network,
ensure that you understand the potential impact of any command before using
it.

When using interface virtual-template, configure only
ppp chap hostname username
and ppp chap password
password. The ppp
authentication chap callin command is not supported. In this
example interface dialer is used, which is not affected.

When using interface virtual-template, configure only
ppp pap sent-username username password
password. The ppp
authentication pap callin command is not supported. In this
example interface dialer is used, which is not affected.